Medical puncture instrument

Abstract

The invention concerns a medical puncture instrument for the relocation of drains and catheters, in order to initiate and/or channel the fluid in the body, whereby its components are already assembled, so that an immediate usage capable instrument is delivered in a sterile packaging. The puncture instrument consists at least of a puncture tube, a handling medium for maneuvering of puncture tube and a longitudinal movable cylindrical body enclosed in the puncture instrument. In a further arrangement, the puncture instrument consists of a lock chamber for the introducing or rather the suction of the fluid. For the fixation of the cylindrical body in a desired position in the puncture instrument, a braking element can be incorporated. The handling element is open in a section, so that the cylindrical body here lies free and can be suspended.

1 . Puncture instrument for medicinal use for the insertion of long stretched cylindrical means in the body, which consists of many components at least of a puncture aid with a metallic shaft ( 1 ), which ends on its distal end in a cannula tip ( 2 ) and its proximal end in a cannula frame ( 3 ), a handling-medium ( 4 , 34 ) for targeted advancing of of the puncture instrument onto a certain anatomic space point in the body and a long stretched cylindrical means enclosed in the puncture aid, being axially movable ( 11 ), thus characterized by, that these components are present as a complete mounted and ready for immediately be used puncture instrument in sterile packaging, the distal end ( 12   a  or  12   b ) of the cylindrical formed means is placed at a pre-determined position in the puncture instrument, the handling element ( 4 ;  36 ;  38 ) is formed as a grip body with a grip capable upper surface arrangement for finger and is connected with a cannula frame ( 5 ), and the cylindrical formed means, which is present in a channel, formed by a the shaft and the handling element, has an essentially large length than the surrounding channel, the cylinder forming aid ( 11 ) being movable as regard to the shaft ( 1 ) and the handling element and protruding proximal from the handling area. 
     
     
         2 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that the puncture aid at least has in its distal area for better recognizability in the ultrasound image an outer upper surface, which increases the echogenity. 
     
     
         3 . (canceled) 
     
     
         4 . A sluice chamber element according to  claim 31 , thus characterized by, that the cylinder forming aid ( 11 ) is a catheter. 
     
     
         5 . A sluice chamber element according to  claim 31 , thus characterized by, that the cylinder forming aid ( 11 ) is a solid body. 
     
     
         6 . A sluice chamber element according to  claim 31  thus characterizes by, that the cylindrical body is a steel wire. 
     
     
         7 . A sluice chamber element according to  claim 31 , thus characterized by, that the process ( 8 ) is already connected with an extension hose. 
     
     
         8 . A sluice chamber element according to  claim 31 , thus characterized by, that inside that sluice chamber a brake element ( 9 ;  13 ) is established, which retains the long stretched cylindrical body ( 11 ) in the desired slot position. 
     
     
         9 . A sluice chamber element according to  claim 31 , thus characterized by, that the friction force of the brake is kept in the range of 0.15 till 0.6 N. 
     
     
         10 . A sluice chamber element according to  claim 31 , thus characterized by, that despite the brake effect the cylindrical body can be deliberately pushed axially. 
     
     
         11 . (canceled) 
     
     
         12 . (canceled) 
     
     
         13 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that the brake element is established in the area of the handling area ( 36 ) and is located proximal of the proximal opening of the channel ( 35 ) for the cylindrical body ( 11 ). 
     
     
         14 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that the brake elements ( 9 , 13 , 50 ) can be combined. 
     
     
         15 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that the brake ( 50 ;  52 ) is localized) in the handling medium ( 34 ) the braking effect can be modified one-handed. 
     
     
         16 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that a device for the twisting of the shaft or rather the needle tip ( 2 ) with regard to the handling element ( 34 ). 
     
     
         17 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that the device for the change of the spatial orientation of the needle tip in the area of the lock ( 7 ) is localized and can be achieved with single hand. 
     
     
         18 . (canceled) 
     
     
         19 . A sluice chamber element according to  claim 31  thus characterizes by, that that the elastic body ( 9 ) has a fluid sealing function in its channel area ( 10 ). 
     
     
         20 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that the cannula protection cover ( 27 ) can have two positions with regard to the cannula frame ( 3 ), which guarantees in one position the impermeability of the air and in the other position the impermeability of the air. 
     
     
         21 . Medicinal puncture instrument according to  claim 1 , thus characterized by, that on the distal end of the cannula protection cover ( 27 ) a plug ( 31 ) is localized, which can have two positions, which guarantees in one position the permeability of the air and in the other position the impermeability of the air. 
     
     
         22 . Handling element ( 34 ) as part of a medical puncture aid is formed with grip devices ( 38 ) and so the maneuvering of the puncture instrument is enabled with two fingers without the help of the thumb. 
     
     
         23 . Handling element according  claim 22 , thus characterized by, that the elastic grip devices ( 38 ) of the handling element ( 34 ) has an adaptation capability to the size of the intervening finger. 
     
     
         24 . Handling element according to  claim 1 , thus characterized by, that on the puncture instrument in the delivery condition a container is attached for inclusion of a cylindrical body ( 11 ) protruding towards proximal side. 
     
     
         25 . Handling element according to  claim 1 , thus characterized by, that the container is rotatable with regard to the handling element. 
     
     
         26 . Handling element according to  claim 1 , thus characterized by, that the container of the cylindrical body ( 11 ) lies in its largest extent in spatial section below 8 cm. 
     
     
         27 . Handling element according to  claim 1 , thus characterized by, that the container for of the cylindrical body ( 11 ) lies in its largest extent in a spatial section below 5 cm. 
     
     
         28 . Handling element according to  claim 1 , thus characterized by, that the container is formed from spiral windings ( 44 ) in a spatial section. 
     
     
         29 . Handling element according to  claim 1 , thus characterized by, that spiral windings lies helix type in various spatial sections ( 42 ). 
     
     
         30 . Handling element according to  claim 1 , thus characterized by, that the container consists of for example sachet, flaps or other forms deviating from a spiral winding. 
     
     
         31 . A sluice chamber element ( 7 ) for use in a medical puncture aid, positioned in between the cannula base ( 5 ) and the handling element ( 24 ), said sluice chamber element providing an axial passage through proximal and distal openings for a long stretched cylindrical body ( 11 ) and exhibiting laterally a third opening with a process ( 8 ) for passage of fluids.